An efficient and convenient strategy toward fire safety and water resistance of polypropylene composites through design and synthesis of a novel mono‐component intumescent flame retardant

2019 ◽  
Vol 30 (7) ◽  
pp. 1543-1554 ◽  
Author(s):  
Haichao Liu ◽  
Sheng Li ◽  
Zhiyong Zhang ◽  
Bin Li ◽  
Miaojun Xu
Molecules ◽  
2021 ◽  
Vol 26 (13) ◽  
pp. 4094
Author(s):  
Imran Ali ◽  
Nam Kyeun Kim ◽  
Debes Bhattacharyya

The integration of intumescent flame-retardant (IFR) additives in natural fiber-based polymer composites enhances the fire-retardant properties, but it generally has a detrimental effect on the mechanical properties, such as tensile and flexural strengths. In this work, the feasibility of graphene as a reinforcement additive and as an effective synergist for IFR-based flax-polypropylene (PP) composites was investigated. Noticeable improvements in tensile and flexural properties were achieved with the addition of graphene nanoplatelets (GNP) in the composites. Furthermore, better char-forming ability of GNP in combination with IFR was observed, suppressing HRR curves and thus, lowering the total heat release (THR). Thermogravimetric analysis (TGA) detected a reduction in the decomposition rate due to strong interfacial bonding between GNP and PP, whereas the maximum decomposition rate was observed to occur at a higher temperature. The saturation point for the IFR additive along with GNP has also been highlighted in this study. A safe and effective method of graphene encapsulation within PP using the fume-hood set-up was achieved. Finally, the effect of flame retardant on the flax–PP composite has been simulated using Fire Dynamics Simulator.


RSC Advances ◽  
2015 ◽  
Vol 5 (21) ◽  
pp. 16328-16339 ◽  
Author(s):  
Rui-Min Li ◽  
Cong Deng ◽  
Cheng-Liang Deng ◽  
Liang-Ping Dong ◽  
Hong-Wei Di ◽  
...  

The water resistance, flame retardancy and mechanical properties of POE intumescent flame-retardant systems were improved simultaneously.


2015 ◽  
Vol 2015 ◽  
pp. 1-7 ◽  
Author(s):  
Shibin Nie ◽  
Chi Zhang ◽  
Chao Peng ◽  
De-yi Wang ◽  
Daowei Ding ◽  
...  

A char forming agent (CFA) and silica-gel microencapsulated ammonium polyphosphate (Si-MCAPP) were selected to form novel intumescent flame retardant system to prepare flame retardant polypropylene (PP) composites, and then the influences of nanoporous nickel phosphates (NiP) on the thermal and flame retardant properties of flame retardant PP composites were studied by the real time FTIR (RTFTIR) spectra, limited oxygen index (LOI) test, and the scanning electron microscopy. RTFTIR shows the addition of NiP can improve the thermal stability of flame retardant PP composites. LOI test shows LOI value is increased with the increase of the content of NiP, and the optimized concentration of NiP is 1.0%. Furthermore, smoke toxicity of the novel flame retardant PP composites was studied by mice experiment. The upper limit of the no death smoke concentration of the composite is 12.37 mg/L.


2020 ◽  
Vol 31 (11) ◽  
pp. 2884-2895
Author(s):  
Xilei Chen ◽  
Xinyuan Zhang ◽  
Shaoping Kuang ◽  
Chuanmei Jiao ◽  
Shaoxiang Li

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